Merge already downloaded maps together

Hi, thanks for your idea and there is one suggestion for it: in "Mobile Atlas Creator" program you can add more than one selection while creating the offline map.
For example: select your first city area on map and click "Add Selection",
after that select your second city (or any other area) and press "Add Selection" again.
As result offline map will be created containing both selections. So you don't have to switch between offline maps.